baber/WOPTO huggingface dataset:
Patent GB-1311194-A (GB)
Title: Copying machine and method
IPC: G03B27/30
Filed: 1970-04-08
Abstract: 1311194 Photographic copying machines MINNESOTA MINING & MFG CO 8 April 1970 [9 April 1969] 16754/70 Heading G2A In a copying machine an intermediate sheet and an original are exposed to a light source in contact, then the intermediate is placed in contact with a copy sheet and the two heated, after which the copy sheet is stripped away from the intermediate and heated again to complete the development. As shown, the photo-sensitive intermediate sheet 29 winds off a supply drum 28, is guided round a print drum 30, and is taken up on a drum 35. An original is introduced on chute 14 and passes round drum 30 in contact with intermediate 29 and an exposure made by a light source 31. The drum 30 is perforated, and a positive pressure is applied to its interior. A stripper bar 39 bears against the drum, and after exposure it removes the original and guides it into a recovery chute 17. A copy sheet from a supply tray 50 is fed into the system by a roller 51, and is held in contact against the intermediate 29 by a belt 42. A heated platen 33 is brought into contact with the intermediate, so that an image transfer takes place as the sheets pass the platen. A stripper bar 54 then separates the copy sheet from the intermediate, the copy sheet being carried by the belt 42 round a drum 45 which applies further heat to complete the development of the image. The copy sheet is then finally delivered into a chute 21. As the copy sheet is stripped away from the intermediate by bar 54, the platen 33 is retracted and the direction of travel of the intermediate reversed so as to prepare it for a subsequent exposure. The various operations are controlled automatically by a system of micro-switches. If multiple copies of a single original are required, the stripper bar 39 does not bear against the print drum 30, and this has a negative pressure induced within it, so that the original is retained and is carried round on drum 30 for repeated exposures, the sequence reverting to that described above for final copy. The number of copies required can be set by a count switch (25), Fig.1 (not shown).
Patent GB-1426158-A (GB)
Title: Seats
IPC: A47C3/12
Filed: 1974-04-17
Abstract: 1426158 Seats; combined stools and step ladders J A SPEIDEL 17 April 1974 [30 April 1973] 16772/74 Addition to 1397120 Headings A4H and A4J A self-sustaining seat comprising a seat part 11, Fig. 1, a floor-engaging support part 13, and seat and support connecting parts 14, has the assembly of parts made developable, i.e., unfoldable without stretching, crumpling or tearing, into a unitary flat pattern, e.g., as in Fig. 3, the parts being ruled surfaces, i.e., surfaces formed by a straight line generatrix, in which rule lines of respective surfaces meet rule lines of adjacent surfaces upon the contour of the seat, the images of said meeting rule lines when projected on the pattern also meeting on the pattern, e.g. straight fold lines 17 extending from an edge of the blank have ends terminating within the blank perimeter; and in which rule lines of said surfaces meet at other than a straight line extending from edge to edge of the contour, the images of such rule lines also meeting at other than a straight line extending from edge to edge of the pattern, e.g. rule lines forming seat 11 meet rule lines forming support 13 along curved fold line 16. The seat may include an integral back part 12. The invention may be applied to a combined stool and step-ladder Figs. 13-15 (not shown). The blank may comprise sheet metal and the periphery may be turned over a stiffening wire. Cantilever seats are disclosed.
Patent GB-181736-A (GB)
Title: Improvements in or relating to electrical metal-vapour apparatus
IPC: H01J13/48
Filed: 1922-06-17
Abstract: 181,736. Siemens - Schuckertwerke Ges. June 18, 1921, [Convention date]. Low-pressure metallic-vapour apparatus.-In metal-cased metallic-vapour apparatus, such as a mercury vapour rectifier, the active part of the cathode, and the hottest part of the vapour stream, are separated from the anodes and from the walls of the container by means of a wall of refractory material such as quartz, extending preferably from the cathode container. As shown, a quartz tube 7 dips into the mercury cathode 3, and projects up to or beyond the mouth of the anode casing 5, the arc being thereby caused to follow the path indicated by arrows. The tube 7 may be integral with the cathode container 2, or the container 2 may be dispensed with, and the opening of the casing 5 placed closer to the tube 7. Specification 24025/05 is referred to.
Patent GB-1159917-A (GB)
Title: Improvements in and relating to Door Closing Springs and Checks
Inventor: WHARTON JOHN
IPC: E05F3/10
Filed: 1967-04-12
Abstract: 1,159,917. Door closing springs and checks. JAMES GIBBONS Ltd. 12 Dec., 1967 [12 April, 1967], No. 16863/67. Heading E2M. A door-closing spring and check mechanism comprises a box 1 in which is journalled a pintle 2 to engage and turn with the door, a heart shaped cam 4 on the pintle 2, and a rectangular follower 7 which is mounted to slide in the box I under the turning action of the cam 4 when the door is opened, in opposition to at least one door-closing compression spring 11 which may be adjustable thrusting on the follower 7 and is restrained, in the return movement as the door closes, by a piston-and-cylinder type sealed hydraulic check 18 opposing the spring closing action. Two notches 5a are provided in the cam 4 to engage respectively with the anti-friction rollers 6 and hold the door when it is fully opened in either direction. The device of the invention is suitable for mounting above a door, in the transom or lintel.
Patent GB-1300927-A (GB)
Title: Digital data transmission systems
Inventor: FROST ALFRED CECIL
IPC: H04L25/05
Filed: 1969-04-01
Abstract: 1300927 Telegraphy POST OFFICE 1 May 1970 [1 April 1969] 16954/69 Heading H4P Each element of a binary data signal is encoded to increase the number of transitions in the signal to match the transmission speed of the channel over which the signal is to be transmitted and to ensure synchronisation between the transmitter and receiver. Several signals are encoded using different codes and multiplexed together. In Fig. 3 binary signals A1-4 having a low number of transitions each  have their elements uniquely encoded by signals E1-4 applied to gates EG1-4 and then multiplexed into a single signal Q5 by gates GM1-4. Trigger stages TGA, TGB convert the presence or absence of a signal Q5 into a binary 1 or 0 signal H for transmission. At the receiver (Fig. 4, not shown) the reverse conversion takes place then the signals are separated and decoded by flow gates receiving signals identical to E1-4, after which the individual signals are  demultiplexed to produce replicas of signals  A1-4. One of the output signals is examined by logic circuits (Fig. 10, not shown) for lack of synchronisation of the receiver. A continual lack of synchronization over several multiplex-frames causes the counter supplying multiplex timing pulses to repeatedly skip pulses until synchronization is re-established.
Patent GB-922953-A (GB)
Title: Process for preparing alkyl acetates
Inventor: BIHAN HENRI LE
IPC: C07C69/14
Filed: 1959-05-19
Abstract: In Example (1) a mixture containing equimolecular quantities of n-butanol, acetonitrile, water and sulphuric acid is heated to 120-125 DEG C. The reaction mixture forms two layers which are separated by decontation.  The lower layer consists of melted ammonium bisulphate which is mixed with sulphuric acid to facilitate handling and is then neutralised with ammonia to yield white ammonium sulphate.ALSO:Alkyl acetates are prepared by the alcoholysis of acetonitrile at an elevated temperature in the presence of water, an alkanol and sulphuric acid or hydrochloric acid in proportions such that for each mole of acetonitrile there is one mole of water, one mole of alkanol and one mole of anhydrous sulphuric or hydrochloric acid.  In comparative experiments the use of reactants in proportions other than those defined above, and the use of phosphoric acid are mentioned.  In examples: (1) acetonitrile, n-butyl alcohol, water and 96% sulphuric acid are heated together and the resultant two layers separated.  The upper layer is cooled, neutralized, filtered and distilled giving butyl acetate; (2) ethyl acetate is prepared in a similar manner from acetonitrile, water, ethyl alcohol and sulphuric acid.
Patent GB-120456-A (GB)
Title: An Improved Device for Inspecting the Interior of Gun Barrels, Tubes and the like.
Inventor: ATKINSON WILLIAM HENRY
IPC: F41A31/02
Filed: 1917-11-20
Abstract: 120,456. Atkinson, W. H. Nov. 20, 1917. Inspecting inaccessible parts and interiors, appliances for. - Relates to cptical and lighting appliances, for inspecting the interior of gun barrels, tubes, cylinders, sewers, and furnace or other flues, and of the kind in which a lamp D, secured to a rod B is employed in combination with mirrors or lenses E, the rod being movable on wheels C through the interior of the tube &c. According to the invention, the mirrors or lenses are mounted so as to be readily adjustable to any desired angle, from outside the tube &c., by means of wires or rods F. In the form shown, flat mirrors E are adjustable on pivots H against the action of springs G which return the mirrors when the wires t' are released
Patent GB-915221-A (GB)
Title: Improvements in or relating to variable focal objectives
IPC: G02B15/14
Filed: 1959-05-20
Abstract: 915,221. Vari-focal objectives. PAILLARD S.A. May 20, 1959 [Nov. 13, 1958], No. 17905/59. Class 97 (1). In a vari-focal objective comprising two groups of movable lenses disposed between two groups of stationary lenses, one stationary group is convergent and the other divergent and one of the movable groups is a convergent system while the other movable group is a Galilean system. It is preferred that the Petzval sum of the Galilean system is negative and of the same order as the total positive Petzval sum of the other three groups. Optical data are given for one example of the objective illustrated in which the front group is a divergent doublet L1, L2, the movable Galilean system consists of lenses L3 and L4, the movable convergent system consists of doublets L5, L6 and L7, L8 and the rear stationary group is a convergent triplet L9, L10 and L11.
Patent GB-255218-A (GB)
Title: Process of manufacturing brake-linings, grinding or friction bodies
IPC: F16D69/02
Filed: 1925-07-03
Abstract: 255,218. Hellmann, H. July 3, 1925. No Patent granted (Sealing fee not paid). Energy-absorbing elements; blocks and shoes.- Grindi;lg, braking, or other friction bodies are formed by welding into the grinding, braking, &c. surface of a metal base, materials of suitable coefficients of friction. As applied to a cast-iron brake block, strips 2 of harder iron or steel may be welded into the brake, surface 3, and the welded-in metal may contain emery or like material. The strips may run across the block obliquely or parallel with the ends, or they may be arranged at the ends or entirely around the edges of the block.
Patent GB-1345601-A (GB)
Title: Method for drying crystallized sugar
IPC: C13B40/00
Filed: 1971-05-26
Abstract: 1345601 Drying of crystallized sugar RAFFINERIE TIRLEMONTOISE 26 May 1971 [3 June 1970] 17185/71 Heading F4G [Also in Division C6]  Crystallized sugar is dried in a heated environment maintained at a relative humidity of less than 100% but exceeding 85% of the equilibrium relative humidity of the temperature of the environment. Equilibrium relative humidity is defined as the relative humidity below which the sugar dries and above which it humidifies. In an example the equilibrium relative humidity of granulated sugar of 99À75% purity is 82% at 80‹ C., and the sugar and water for moistening are brought separately to a temperature of 80-82‹ C. after which they are mixed in the ratio of 2 kg. of water to 100kg. of sugar and the mixture moulded and compressed in an atmosphere maintained at 80‹ C. and a relative humidity of 72%. The resulting product is removed from the mould and dried in an atmosphere identical with that obtaining during moulding.
Patent GB-804714-A (GB)
Title: Pressing iron
IPC: D06F75/34
Filed: 1955-06-15
Abstract: 804,714. Preventing fracture of flexible leads. SUNBEAM CORPORATION. June 15, 1955 [Nov. 12, 1954], No. 17264/55. Class 38 (1). [Also in Groups VIII and XXXVII] Strain relief means for the electric supply cable 21 of an electric steam iron (see Group VIII) comprises a helical spring 155 having a plurality of enlarged turns 155a which are of sufficient diameter to prevent them from entering a tapered opening 154 in the handle 80 of the iron, and a plurality of turns 155b of small enough diameter to enter the opening 154 and terminating in a hooked portion 155c adapted to engage a member 160c. This member 160c comprises a T-shaped projection extending upwardly from a cylindrical portion 160a of a cord clip 160 which is clamped to the cord 21 after it is inserted through the opening 154. Recesses 161, 162 are provided in the handle adjacent the opening 154 to receive the projection 160c and a downwardly-extending projection 160b respectively. Specification 701,938, [Group XXXVII], is referred to.
Patent GB-663976-A (GB)
Title: Modulation of electric oscillations employing the phenomena of super-conductivity
IPC: H03C5/00
Filed: 1949-06-30
Abstract: 663,976. Modulating apparatus; pulsing carrier frequencies. TELEFONAKTIEBOLAGET L. M. ERICSSON. June 30, 1949 [July 9, 1948], No. 17339/49. Class 40 (v). Modulation or interruption of electric oscillations is effected by a conductor exhibiting the phenomena of super-conductivity, by connecting the conductor in the circuit of the oscillation generator or amplifier and employing the signal to vary the magnetic field in which the conductor is immersed, so as to vary the conductor resistance. As shown in Fig. 1, the tuned anode circuit L<SP>3</SP>, C<SP>3</SP> of an oscillation amplifier T<SP>1</SP> is partially shunted by the conductor S, and the signal is applied at terminals 1, 2 to vary the current in a coil L<SP>6</SP> surrounding the conductor. In Fig. 2, pulses from PG are applied to a coil L<SP>6</SP> surrounding the conductor S which is connected in a circuit including a coil L<SP>10</SP>, a condenser C<SP>11</SP> and a magnetron oscillator T2. The condenser is charged through resistors R<SP>1</SP>, R2 from a D.C. source Ua, and discharges through the shaping-coil L<SP>10</SP>, the conductor S, and the magnetron, causing pulses of oscillations to be supplied to the output lead K. A transformer or other matching network can be interposed between the conductor S and the condenser circuit, Fig. 3 (not shown). In a further modification, Fig. 4, the condenser is omitted, and the circuit of the conductor S is coupled to the supply circuit of the magnetron T2 by a transformer Tr. Specification 666,883 is referred to.
Patent GB-146180-A (GB)
Title: Improvements in the manufacture of tanning agents
IPC: C14C3/20
Filed: 1920-06-25
Abstract: Tanning-agents are prepared from the waste acid resins of mineral oil refinery by adding thereto a cyclic hydrocarbon, e.g. naphthalene, in amount corresponding with the sulphuric acid content of the resin and heating until a sulphonated condensation product soluble in water is obtained; agents which enter into or promote condensation, such as formaldehyde, ketones, phosphorus oxychloride, or thionyl chloride, may be added.
Patent GB-786327-A (GB)
Title: Improvements relating to carrier bags
Inventor: BARON ARTHUR JAMES
IPC: B65D33/10
Filed: 1955-06-16
Abstract: 786,327. Carrier bags. BIBBY & BARON, Ltd. June 18, 1956 [June 16, 1955], No. 17406/55. Class 133. A carrier bag has handles 4 of crepe paper or other suitable sheet material stitched to paper, &c. reinforcement pieces 2, 3 secured to the inside or outside surfaces of the bag. The handles are preferably enclosed between the pieces 2, 3 and the bag walls.
Patent GB-1305435-A (GB)
IPC: A47L5/36
Filed: 1970-04-13
Abstract: 1305435 Suction cleaners HOOVER Ltd 13 April 1970 [14 April 1969] 17451/70 Heading A4F [Also in Division B1] A suction cleaner has a casing 10 containing a motor-fan unit 26 producing an air flow through a filter 35 to an outlet socket 36 at one side of a carrying handle 101 formed integrally with a moulded plastics support member 75 secured to the top wall 34 of the cleaner casing, and a cover 86 is moveable to open an aperture 84 in the member 75 to permit connection of an exhaust hose to the socket 36, or to close the aperture 84 so that air leaving the socket 36 is deflected by the cover 86 towards the opposite side of the handle stem to be discharged through a diffuser 104 provided with a filter 125 and a cover 112 having discharge openings between longitudinal ribs 121. In the path of the air flow between the socket 36 and the diffuser 104, when the cover 86 is closed, is a pivoted vane 127 of a device for indicating when the dust bag 21 is full. The vane 127 is tilted by the air flow except when the flow is reduced by the fullness of the dustbag, when warning indicia 143 on the vane 127 becomes visible through a window 144. The electric power cable 59 is mounted on a brake controlled reel 55 and is retractable through an end cover of the cleaner casing to any length desired.
Patent GB-615887-A (GB)
Title: Improvements in holders for arc-welding electrodes
IPC: B23K9/28
Filed: 1945-10-03
Abstract: 615,887. Holders for arc-welding eiectrodes. GENERAL ELECTRIC CO., Ltd., DAVIES, E. C., RODEN, A. H., and HIGHFIELD, A. W. Oct. 3, 1945, No. 17479. [Class 39 (iii)] A holder for a pair of arcwelding electrodes to be used in unison comprises an insulated handle 1 with a hollow head 2 carrying posts 4, 9 in which electrodes 7, 17 are held by clamping screws 6, 11, the post 9 having lateral studs 12 engaging respectively a groove 13 and an aperture in opposite walls of a slot in the head 2, so that electrode 17 may be tilted about the aperture for adjusting in a direction transverse of a plane containing the axis of the holder body and the electrode 7. A switch 23 in the handle has a movable bridging member moving parallel to itself to contact two sets of fixed switch poles, and a lever 24 pivoted on the handle holds the switch closed by hand pressure against a spring, so that the switch is opened when the grip on the handle is released. The relative positions of the levers 18, 24 is such that they may be operated simultaneously by one hand. The electrode 17 may be rocked on the studs 12 to bring the free ends of the electrodes into contact. The electrode 17 may be moved bodily or parallel to itself in a plane containing the two electrodes. One pivot stud has a screwed extension 14 extending through the head 2 of the holder and carrying a thumbscrew 15 to move the electrode 17 lengthwise to keep the free ends of the electrodes in longitudinal register. A compression spring 16 surrounds the extension 14. A tension or compression spring 19 extends between the member 14 and an anchorage 20 in the head, so that when a lever 18 fixed to the post 9 is moved by hand to tilt the electrode 17, the spring 19 returns the electrode to its original position when the lever 18 is released. Two-phase current is supplied to the electrodes through leads 21, 22 the neutral point being connected to the work. Specification 615,973 is referred to.
Patent GB-425661-A (GB)
Title: Improvements relating to boots or shoes and more particularly to arch supporting means for embodiment therein
IPC: A43B7/14
Filed: 1934-06-13
Abstract: 425,661. Foot-arch supports. ARNOLD, J. F., and WILLIAMS, A., 6, Milbourne Street, Well Street, Hackney, London. June 13, 1934, No. 17490. [Class 81 (ii)] [See also Group VII] A resilient foot - arch supporting pad is accommodated in a pocket in the shoe lining and is supported against the foot by stiffening means such as a forward extension on the inner side of the heel stiffener, or by a separate stiffener located adjacent the foot arch. The pocket may be formed by stitching together the two layers of a double lining or, as shown, Fig. 1, by stitching an extra piece of material 3, such as soft leather, to the lining 2. The stitches which form the pocket may also secure in place a backing piece adhesively or otherwise connected to the back of the resilient pad. The arch-supporting extension 5, Fig. 2, on the heel stiffener 6 is reduced in height, as shown, to permit it to bend. The pad may be of sponge rubber of semicircular or crescent shape and may taper in thickness upwards from the base.
Patent GB-1348530-A (GB)
Title: Serial parallel conversion
IPC: H04L7/08
Filed: 1971-05-27
Abstract: 1348530 Automatic exchange systems; digital transmission systems INTERNATIONAL STANDARD ELECTRIC CORP 27 May 1971 [24 June 1970] 17519/71 Headings H4K and H4P In the central control equipment of a telecommunication exchange a clock pulse train and a signal pulse train of half the clock pulse train frequency are transmitted to a receiver which divides the clock pulse train into first and second pulse trains each of the signal pulse frequency, the first of which is used to control writing of the signal pulse train in a serial to parallel converter and fed together with the second train to a circuit which checks the written information. In the receiver shown information signals incoming on lines L1 and L2, in duplicate for security, are checked for parity (odd or even) by trigger circuits S1, S1, and applied to each of a set of gates such as N3 leading to bi-stables FF1 to FFn. Clock pulse trains arriving over lines L3 and L4, in duplicate for security, are applied to a trigger circuit S2 which passes them alternately to lines S2A1 and S2A2 to provide two clock pulse trains of the same frequency as the incoming signals and 180 degrees out of phase with each other. The pulses of the train at S2A1 step a counter Z successively enabling its outputs 1 to n, causing for each step a bi-stable such as FF1 to be set in accordance with the information signal bit received at that time and causing the set state to be applied via a gate such as FF1A to trigger circuit S3 enabled by the next pulse of the other clock pulse train at S2A2. The trigger circuit S3 performs a parity check of the information stored in the bi-stables FF1 to FFn prior to their gating out in parallel at A1 to An.
Patent GB-236947-A (GB)
IPC: B03B5/62
Filed: 1925-07-08
Abstract: 236,947. Remy, H. July 8, 1924, [Convention date]. Upward-current classifiers.-A washer for separating materials of different densities or sizes comprises a number of columns 1, 2, &c. in series, to which water at different pressures is supplied through valves 4, 5, the successive columns being separated by members 3, 10 serving to pass the heavier material from one column to the next, such members being in the form of rotary drums, screws, or mechanically or automatically operated flaps. The lighter materials successively removed are discharged at outlets 8, 9, &c. A number of sets of columns may be operated in parallel.
Patent GB-581608-A (GB)
Title: Improvements in the socket tubes of electric couplings
IPC: H01R13/187
Filed: 1944-09-14
Abstract: 581,608. Two-part couplings. CRABTREE & CO., Ltd., J. A., and WAITE, R. T. Sept. 14, 1944, No. 17562. [Class 38 (i)] A socket for an electric coupling comprises a metal block a with two openings b, c and a connecting slot d, lined with a resilient strip e, the middle portion e<1> of which forms a hinge for the end, pin-grinping, portions in the opening c. The ends e<5> of the strip may extend above the block a and be flared to assist the entry of the pin. The slot d may be of increasing width from the opening b to the opening c to permit the hinge action when the pin enters the socket.